New 2017 Auto-X rubber coming?

[Twinz]

I tested the RE-71R's I ran at Dixie against the 1.5's I ran at the Fort Myers Pro.

On our test & tune course, (concrete) I was almost 2-tenths faster on the RE-71R's. (Course is about 32 seconds long.)

Both sets of tires were 225/45-17 on 7" RPF1's.

The 225 1.5's on the 7" wheel feel vague...as if they are pinched on the wheel. (The RE71's, on the same wheel, feel razor sharp in comparison)

I want to test a set of 1.5 215's on the same wheel and see if they do better.

In this particular application, the RE71R's were the faster tire.

[Rio]

Originally Posted by Twinz

I tested the RE-71R's I ran at Dixie against the 1.5's I ran at the Fort Myers Pro.

On our test & tune course, (concrete) I was almost 2-tenths faster on the RE-71R's. (Course is about 32 seconds long.)

Both sets of tires were 225/45-17 on 7" RPF1's.

The 225 1.5's on the 7" wheel feel vague...as if they are pinched on the wheel. (The RE71's, on the same wheel, feel razor sharp in comparison)

I want to test a set of 1.5 215's on the same wheel and see if they do better.

In this particular application, the RE71R's were the faster tire.

With alk due respect, until you test in both in your own car by the same driver, I would not make any claims. Too many other factors are involved.

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[Twinz]

Originally Posted by Rio

With alk due respect, until you test in both in your own car by the same driver, I would not make any claims. Too many other factors are involved.

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That's what I did. Same car, driver, course, and day.

[Rio]

Originally Posted by Twinz

That's what I did. Same car, driver, course, and day.

My apologies, you said against and I interpreted it as in an opponent vehicle.

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[jwisjw]

FWIW, one car ran 1.5's at the Fontana Pro Solo for all of Saturday's run and slapped on the RE71R's for Sunday.

Left side dropped almost .6
Right side dropped a little over .6

This driver "paxed" top 10 on this surface, nothing changed on the car except tires.

[justinco]

What is the surface at Fontana?

I'm getting the impression that surface and weather conditions will determine which tire is faster, and that there is no outright quicker tire.

[jwisjw]

Originally Posted by justinco

What is the surface at Fontana?

I'm getting the impression that surface and weather conditions will determine which tire is faster, and that there is no outright quicker tire.

Fontana is porous and rocky like asphalt.

FWIW, I don't think ambient temps influenced any performance advantage between the two tires.